I belong to the school of thought of Arnold Toynbee, who maintains in his monumental Study of History that in the annals of history, the civilizations that disappeared did so because they were unable to adapt to change.
Yo pertenezco a la escuela de pensamiento de Arnold Toynbee, quien sostiene en su magistral Estudio de la Historia que las civilizaciones que desaparecieron en los anales de la historia lo hicieron por ser incapaces de adaptarse al cambio.